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A032912
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Numbers whose set of base-5 digits is {1,3}.
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2
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1, 3, 6, 8, 16, 18, 31, 33, 41, 43, 81, 83, 91, 93, 156, 158, 166, 168, 206, 208, 216, 218, 406, 408, 416, 418, 456, 458, 466, 468, 781, 783, 791, 793, 831, 833, 841, 843, 1031, 1033, 1041, 1043, 1081, 1083, 1091, 1093, 2031, 2033
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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COMMENTS
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Or, Numbers all of whose base-5 digits are odd.
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 1..1000
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MATHEMATICA
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Flatten[Table[FromDigits[#, 5]&/@Tuples[{1, 3}, n], {n, 5}]] (* Vincenzo Librandi, Jun 01 2012 *)
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PROG
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(MAGMA) [n: n in [1..2500] | Set(IntegerToSequence(n, 5)) subset {1, 3}]; // Vincenzo Librandi, Jun 01 2012
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CROSSREFS
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Cf. A007091.
Sequence in context: A320687 A340494 A039567 * A123208 A179652 A253855
Adjacent sequences: A032909 A032910 A032911 * A032913 A032914 A032915
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KEYWORD
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nonn,base
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AUTHOR
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Clark Kimberling
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STATUS
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approved
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